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Redirecting Error Output To Null

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Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the discards date command output: ### Show on screen ### date ### Discards date command output ### date > /dev/null Syntax: Standard Error (stderr -2 no) to a file or /dev/null It can be used to suppress any output. so further on 2>, means is you are redirecting [i.e. ">"] stderr [i.e. 2] into black hole [i.e. /dev/null/ ] this is your command : grep -i 'abc' content 2>/dev/null i have a peek at this web-site

Please click the link in the confirmation email to activate your subscription. Does Anna know what a ball is? How to search for flights for a route staying within in an alliance? I have this command: Code: du -h -c ~ | grep total and when I execute it, it sometimes show errors like : du: cannot read directory `bla': Permission denied and http://unix.stackexchange.com/questions/75616/always-redirect-error-to-dev-null

Redirect Stdout And Stderr To Dev Null

Modo di dire per esprimere "parlare senza tabù" What is the meaning of the 90/10 rule of program optimization? Browse other questions tagged redirect stderr cmd or ask your own question. Code: du -h -c ~ | grep total 2>/dev/null Can anyone help Thanks Adv Reply November 18th, 2009 #2 sisco311 View Profile View Forum Posts Private Message resistance is futile All rights reserved.

UNIX is a registered trademark of The Open Group. DDoS: Why not block originating IP addresses? Thank you Giuseppe for the tip. Find 2 Dev Null RSS Feed.

Reusable Matrix block types Is it safe for a CR2032 coin cell to be in an oven? Hello ! I would like to redirect that output to null. Tue, Jun 6, 2006 in Programming I remember being confused for a very long time about the trailing garbage in commands I saw in Unix systems, especially while watching compilers do

Contact: [email protected], Twitter, LinkedIn. 1 Dev Null Not the answer you're looking for? Reply Link Frank June 30, 2009, 5:15 pm need a command in my bash script to remove some (not all) of the contents of directory2. This will close output for whichever file descriptor is referenced, i.e. "M". 2>/dev/null The general form of this one is M>/dev/null, where "M" is a file descriptor number.

Redirect Stderr To Dev Null And Stdout To File

use: command 2>&1 1>/dev/null Reply Link nixCraft October 6, 2011, 12:54 am No, it does not matters. pop over to these guys Exactly what i wanted! Redirect Stdout And Stderr To Dev Null no, do not subscribe yes, replies to my comment yes, all comments/replies instantly hourly digest daily digest weekly digest Or, you can subscribe without commenting. Redirect Stderr To Dev Null C These three file descriptors (you can think of them as “data pipes”) are often called STDIN, STDOUT, and STDERR.

What have folks' experiences been with the different commands and bash/sh versions when trying it this way? Check This Out I'm sure you have something in mind where both good and bad output would normally go to stdout. asked 3 years ago viewed 76211 times active 2 years ago Blog Stack Overflow Podcast #92 - The Guerilla Guide to Interviewing Linked 0 What does this ls command do? 53 Besides the "2>" construct mentioned by Tanuki Software, it lists some other useful combinations. Redirect Stderr To Null Windows

This site is not affiliated with Linus Torvalds or The Open Group in any way. Bash / ksh and other modern shell on Linux has three file descriptors: stdin (0) stdout (1) stderr (2) Syntax To redirect all output to file The syntax is as follows Follow him on Twitter. Source Reply Link Gopal May 24, 2015, 2:10 am use tee -a to APPEND output using tee example : command | tee -a outfile.txt Reply Link Gopal May 24, 2015, 2:15 am

Your shell comes with three file descriptors as follows:

stdin - 0 - Standard Input (usually keyboard or file) stdout - 1 - Standard Output (usually screen) stderr - 2 2 /dev/null Not Working Join Date Aug 2008 Beans 47 Re: Redirecting stderr to dev null ?? Originally Posted by xx77aBs oh, thats it Thank you very much Can you please tell me (I just want to know ) How can I pie stderr too ? (if it's

no, do not subscribe yes, replies to my comment yes, all comments/replies instantly hourly digest daily digest weekly digest Or, you can subscribe without commenting.

It's probably something specific to your usage scenario. How is this red/blue effect created? Basically you can: redirect stdout to a file redirect stderr to a file redirect stdout to a stderr redirect stderr to a stdout redirect stderr and stdout to a file redirect Redirect Stdin To /dev/null Interaction with dummy variable more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts

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   Receive Email Notifications? Its working great! –Ignacio Soler Garcia Dec 22 '10 at 9:02 1  See also on superuser: > /dev/null for Windows –hippietrail Dec 20 '13 at 15:28 add a comment| 1 Alphabet Diamond more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / have a peek here I also know how to redirect output from display/screen to a file using the following syntax: 

cmd > file ls > file However, some time errors are displayed on screen.

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